Question: Which aircraft family has the highest glide ratio?
Paraphrase: Which airline has the highest glide ratio?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q15056993 . ?ent wdt:P1470 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: Nimbus-4, Lange Antares, Schempp-Hirth Arcus, Rolladen-Schneider LS8, Ventus-2